NAME
DMXQueryVersion - determine DMX extension version
SYNOPSIS
#include <X11/extensions/dmxext.h>
Bool DMXQueryVersion(Display *dpy,
int *major_version,
int *minor_version,
int *patch_version);
DESCRIPTION
DMXQueryVersion() returns version information about the DMX protocol
extension.
Any incompatible changes to the protocol will be indicated by a change
in major_version. Small, upward-compatible changes will be indicated
by a change in minor_version. In general, patch_version is for
informational purposes and will encode the date of the last protocol
revision (e.g., 20040604).
RETURN VALUE
If the DMX protocol extension is available, major_version,
minor_version, and patch_version will be set, and True will be
returned. Otherwise, False will be returned.
NOTES
At the time of this writing, the DMX protocol is at version 2.2.
Version 2.2 was the final development version, and code supporting this
version was submitted to upstream X server repositories in the summer
of 2004.
Version 1.5 was the last of the 1.x series, which was used for
development before screen and input addition and removal were
supported. Version 2.0 and 2.1 were development versions that
partially supported screen and input addition and removal.
Since we do not expect development versions to be widely used, we
recommend that any software that uses the DMX protocol extension to
support only versions 2.2 and above (although they should detect
earlier versions and either reduce functionality or fail gracefully).
SEE ALSO
DMXQueryExtension(3), DMX(3), Xdmx(1)